Shield for switchgear enclosures



Sept. 19, 1950 s. CLA YBOURN ETAL 2,523,095

SHIELD FOR SWITCHGEAR ENCLOSURES Filed Aug. 22, 1946 INVENTORS Glen. Z. Clag'fiour'rz and i ATTORN N ED STATE Patented Sept. 19, 1950 s PATENT OFFICE SHIELD Fon swrronGEAR ENCLOSURES Glen I Claybourm'Pittsburgh, and Gordon G. Gernhardt, Swissvale, Pa, assignors to Westinghouse" Electric Corporation, East Pittsburgh, I Pa a corporation of Pennsylvania Application August 22, 1946, Serial Nat-692,398

a detachable framework which is self-locking infposition on a switchgear housing.

" Amore general object of our invention is to provide a detachable framework which is simple and efficient in operation and which maybe economically manufactured and installed.

Other objects of our invention will be ex- 7 plained fully hereinafter orv will be apparent to those skilled in the art.

' In accordance with one* embodiment of our invention, the framework for a removable covering for the doorway of anoutdoor switchgear housing isso constructed that the framework locks itself in position above the doorway. The

framework may be removed by first swinging it through a small angle and then withdrawin it from the door jamb. For a better understanding of the nature and objects of our invention, reference may be had to the following detailed description, taken in conjunction with the accompanying drawing, in

- which: 7

Figure 1 is a, view, in side elevation, of an outdoor switchgear housing with a, removable covering framework constructed in accordance with our invention;

Fig. 2 is an enlarged view, in plan, of the removable framework;

detail viewof the locking device,

along the line 7 Claims- (01. 16-0-77) commonly known as an outdoor switchhouse, and a removable canopy or shield II for protection during inclement weather. The canopy ll comprises a detachable framework which may be covered in different ways, such asby placing over the framework a tie-down throwover canvas, or by making a formed canvass enclosure of top, front and two sides which can be snapfastened to the removable framework. If desired, a folding sheet metal covering may be provided for the framework.

As shown most clearly in Figs. 1 and 2, the framework of the canopy ll comprises a U- shaped member I2 having a cross member [3 secured to the ends of its legs and a brace comprising members l4 and I4 secured on the bottom side of each leg. The members of the framework may be secured together by welding, or other suitable means.

In order to retain the framework securely in position and make it quickly attachable and'detachable, two or more self-locking devices l5 are provided. As shown in Fig. 5, each locking device l5 comprises a'flat piece of metal 16 having one edge welded to the cross member I 3, a U-shaped piece I! having one leg welded to the bottom of the fiat piece 16 and a round bar l8 welded to th bottom of the U-shaped piece l1 adjacent to the other leg. I

As shown in Fig. 4, the top supporting bar l3 slides into a horizontal well or recess I9 formed by a U-shaped portion l9 in a door jamb 2| on the housing Ill. When the framework is swung downwardly the round bar 18 is so disposed behind the door jamb 2| that the framework is locked in position. As shown in Fig. 1, the ver- Referring to the drawing, particularly to Fig,

1, the structure shown therein comprises a switchgear housing H! which may be of the type .tical portions [4 of the bracemembers are disposed in vertical wells or recesses 22 in the sides of the door jamb 2| when the. framework of the canopy is in position on the housing. In this manner the framework is securely locked in position.

The framework may be removed by first swing ing it upwardly about the cross member l3 to rotate the cross member, thereby lowering the bar !8 below the bottom lip of the well l9 and then withdrawing the framework forwardly away from the door jamb.

From the foregoing description, it is apparent that we have provided a removable canopy having a framework which may be quickly attached to and detached from a switchgear or similar housing. The framework is securely held in position by a self-locking device.

Since numerous changes may be made in the bination, a door jamb on the housing, said door jamb having a horizontally disposed U-shaped portion forming a well therein, 'a-detachable framework, and self-locking mean secured to the framework and cooperating with the bottom of the U-shaped portion to retain th framework in said well when the framework is swung downwardly about said well, said locking means being.

released by swinging the framework upwardly about said well.

In a switchgear housing structure, in combination, a door jamb on the housing, said door jamb having a horizontally disposed U-shaped portion forming a 'well therein, a detachable framework, and-selfdocking means secured to the framework-and cooperating with the bottom of the U-shaped portion to retain the framework in said well when the framework is swung downwardly about said well, said framework being removable by swinging it upwardly about the well. -3. Ina switchgear housing structure, in combination, a door jamb on the housing, said door jamb having a horizontally disposed U-shaped ,portionforminga well across the top and a vertically disposed well in each side, a detachable framework having a cross member insertable in the horizontal well to engage one leg of the U- shaped portion and brace members insertable in the vertical wells, and self-locking means cooperating with the bottom of the U-shaped por tion to retain said members in said wells.

1. In a switchgear housing structure, in combination, a'door jamb on the housing, said door jamb having a horizontally disposed U-shaped portion forming a well across the top and a vertically disposed well in each side, a detachable framework having across member insertable in the horizontal well to engage one leg of the U- shaped portion and brace members insertable in the vertical wells, and'self lockingmeans secured tosaid-cross member and cooperating with the bottom of the U-shaped portion -toretain said members in said-wells.

-5. In a switchgear housing structure, in combination, a door jamb on the housing, said door jamb havin a horizontally disposed U-shaped portion forming a well therein, a detachable framework havin a cross member insertable in said well to engage one leg of the U-shaped portion, and self-locking means secured to said cross member-and cooperating with the bottom of the ,'U-shaped' portion to retain said member in said well when said cross member is rotated :in one direction in said well by swinging the framework downwardly.

6. In a switchgear housing structure, in com- ;bination, a-door jamb on the housing, said door jainb-having a horizontally disposed U-shaped portion forming a well therein, a detachable framework :having a cross member insertable in .said well to engageone le of the U-shaped portion, and self-locking means secured to said cross member and cooperating with the bottom of the U-shaped portion to retain said member in said wellwhen said cross member is rotated in one direction in said well by swinging the framework downwardly,saidlocking means being released by swinging the framework upwardly to rotate thecross member in the other direction.

'7. In a switchgear housing structure, in combination, a door -jamb on the housing, said door jamb having a horizontally disposed U-shaped portion forming a well therein, a detachable framework having across member insertable in said well to engage one leg of the U-shaped portion,-:and self-locking means secured to said cross member and cooperating with the bottom of the U-shaped portion to retain said member in said well when said cross member is rotated in one direction in said well by swinging the framework downwardly, said framework being removable by swinging it upwardlytorotatethe cross member in the other direction.

GLEN L. 'CLAYBOURN. GORDON G. GERNI-IARDT.

REFERENCES CITED The following'references are of record in the file of this patent:

UNITED STATES PATENTS 

